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2 years ago

_____ investigations provide large amounts of information about a wide range of variables.

Biology

2 answers:

liberstina [14]2 years ago

5 0

Quantitative Investigations :)

Alecsey [184]2 years ago

3 0

Answer:

The answer is (Comparative)

Explanation:

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What is one defining feature of a prokaryotic cell? A. ribosomes B. Nucleus C. Flagella D. Nucleoid

Sedaia [141]

Answer:

D. Nucleoid

Explanation:

As prokaryotic cells do not have any organelles, they use a nucleoid to store their prokaryotic DNA.

4 0

2 years ago

What is the magnitude of the force exerted by the biceps fbiceps? What is the magnitude of the force exerted by the elbow felbow

Slav-nsk [51]

Answer:

The magnitude of the force exerted by the biceps $f_b_i_c_e_p_s$ is 218.38N

The magnitude of the force exerted by the elbow $f_e_l_b_o_w$ is 194.37N

Explanation:

Firstly , lets calculate the magnitude of force exerted by biceps $f_b_i_c_e_p_s$ -

Mass of the forearm=

$m_f=1.50kg$

Mass of the ball =

$m_b_a_l_l=950g$

= 0.950kg

so, weight of the forearm=

$w_f=m_f$ g

weight of the ball=

$w_b_a_l_l=m_b_a_l_l$ g

Now , balancing torque about the elbow , we have-

$F_b_i_c_e_p_s\times d_b_i_c_e_p_s= w_f\times\frac{d_b_a_l_l}{2} + w_b_a_l_l\times d_b_a_l_l$

(here , distance of the bicep is 2.50cm = 0.025m and distance of the ball is 36cm= 0.36m)

Now putting the given values in the formula -

$F_b_i_c_e_p_s\times 0.025= 0.95\times9.8\times\frac{0.36}{2} +1.50\times 0.36$

$F_b_i_c_e_p_s=218.38N$

Now, lets calculate the force exerted by elbow $F_e_l_b_o_w$ -

Balancing the vertical forces

$F_b_i_c_e_p_s=F_e_l_b_o_w+w_f+w_b_a_l_l$

$F_e_l_b_o_w = 218.38-(1.00\times9.8)-(0.95\times9.8)$

$F_e_l_b_o_w=194.37N$

8 0

2 years ago

In a well-balanced ecosystem, squirrels eat nuts, raccoons feed on squirrels, and bears feed on raccoons. It was observed that t

BlackZzzverrR [31]

Trophic levels go by,
Producer (The nuts)
Primary Consumer (Squirrels)
Secondary Consumer (Raccoons)
Tertiary Consumer (Bear)

So squirrels would be at a lower trophic level.
Hope his help :)

7 0

2 years ago

Read 2 more answers

1 Which statement describes the relationship between the scientific method and the scientific process?

atroni [7]

Answer:

Option D.

Explanation:

Scientific method is the method of experimentation that is used in science to explore observations and answers to questions on natural world. It involves making observations, formulating hypothesis and conducting scientific experiments.

Scientific processes is the end result of scientific method. It involve step by step approaches use to carry out scientific experiments about natural world.

4 0

2 years ago

4. Explain why there are very few or no plants at the bottom of the ocean. Name the oceanic zone that has NO

kolbaska11 [484]

Answer:

After the aphotic zone, there's complete darkness. From 1,000 meters below the surface, all the way to the sea floor, no sunlight penetrates the darkness

Explanation:; and because photosynthesis can't take place, there are no plants, either.

4 0

1 year ago